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[136] | 1 | // This file is part of Eigen, a lightweight C++ template library
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| 2 | // for linear algebra.
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| 3 | //
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| 4 | // Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
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| 5 | //
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| 6 | // This Source Code Form is subject to the terms of the Mozilla
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| 7 | // Public License v. 2.0. If a copy of the MPL was not distributed
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| 8 | // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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| 9 |
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| 10 | #ifndef EIGEN_TRACKBALL_H
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| 11 | #define EIGEN_TRACKBALL_H
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| 12 |
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| 13 | #include <Eigen/Geometry>
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| 14 |
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| 15 | class Camera;
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| 16 |
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| 17 | class Trackball
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| 18 | {
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| 19 | public:
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| 20 |
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| 21 | enum Mode {Around, Local};
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| 22 |
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| 23 | Trackball() : mpCamera(0) {}
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| 24 |
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| 25 | void start(Mode m = Around) { mMode = m; mLastPointOk = false; }
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| 26 |
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| 27 | void setCamera(Camera* pCam) { mpCamera = pCam; }
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| 28 |
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| 29 | void track(const Eigen::Vector2i& newPoint2D);
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| 30 |
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| 31 | protected:
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| 32 |
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| 33 | bool mapToSphere( const Eigen::Vector2i& p2, Eigen::Vector3f& v3);
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| 34 |
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| 35 | Camera* mpCamera;
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| 36 | Eigen::Vector3f mLastPoint3D;
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| 37 | Mode mMode;
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| 38 | bool mLastPointOk;
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| 39 |
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| 40 | };
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| 41 |
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| 42 | #endif // EIGEN_TRACKBALL_H
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